Saturday, February 18, 2012

What is a constellation?

what is a constellation and what determines when it is visible to us?What is a constellation?The Constellations and their Stars



http://www.dibonsmith.com/constel.htm



http://www.astro.wisc.edu/~dolan/constel鈥?/a>



http://www.nasa.gov/mission_pages/conste鈥?/a>

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